A include longer resting periods between shifts, which amount to at least 9 hours.
B reinforce supervision of air control towers staff on duty in late night and early morning shifts.
C forbid air traffic controllers to change shifts with a colleague if the minimum resting period is not respected.
D restrict air traffic controllers from working an overnight shift after having spent a day away from their post.
E prohibit air control towers staff from working shifts with a 9 hour resting period in between.